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Finding the Fourth Proportional to 968.75, 1,337.07 and 554.75

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Solution

The fourth proportional to 968.75, 1,337.07 and 554.75 is: 765.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    968.75 : 1,337.07 = 554.75 : x
  2. Step 2: Convert to fraction form
    968.75/1,337.07 = 554.75/x
  3. Step 3: Cross multiply
    968.75x = 1,337.07 × 554.75
  4. Step 4: Simplify right side
    968.75x = 741,739.58
  5. Step 5: Solve for x
    x = 741,739.58/968.75
  6. Step 6: Final answer
    x = 765.67

Related Problems

Find fourth proportional to 484.38, 668.54 and 277.38
Half scale
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Double scale
Find fourth proportional to 969.75, 1,338.45 and 555.75
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.