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Finding the Fourth Proportional to 654.54, 903.20 and 374.75

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Solution

The fourth proportional to 654.54, 903.20 and 374.75 is: 517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    654.54 : 903.20 = 374.75 : x
  2. Step 2: Convert to fraction form
    654.54/903.20 = 374.75/x
  3. Step 3: Cross multiply
    654.54x = 903.20 × 374.75
  4. Step 4: Simplify right side
    654.54x = 338,477.39
  5. Step 5: Solve for x
    x = 338,477.39/654.54
  6. Step 6: Final answer
    x = 517.12

Related Problems

Find fourth proportional to 327.27, 451.60 and 187.38
Half scale
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Double scale
Find fourth proportional to 655.54, 904.58 and 375.75
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.