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Finding the Fourth Proportional to 514.87, 710.71 and 348.75

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Solution

The fourth proportional to 514.87, 710.71 and 348.75 is: 481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    514.87 : 710.71 = 348.75 : x
  2. Step 2: Convert to fraction form
    514.87/710.71 = 348.75/x
  3. Step 3: Cross multiply
    514.87x = 710.71 × 348.75
  4. Step 4: Simplify right side
    514.87x = 247,859.24
  5. Step 5: Solve for x
    x = 247,859.24/514.87
  6. Step 6: Final answer
    x = 481.40

Related Problems

Find fourth proportional to 257.43, 355.35 and 174.38
Half scale
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Double scale
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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.