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Finding the Fourth Proportional to 690.21, 952.58 and 524.14

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Solution

The fourth proportional to 690.21, 952.58 and 524.14 is: 723.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    690.21 : 952.58 = 524.14 : x
  2. Step 2: Convert to fraction form
    690.21/952.58 = 524.14/x
  3. Step 3: Cross multiply
    690.21x = 952.58 × 524.14
  4. Step 4: Simplify right side
    690.21x = 499,285.28
  5. Step 5: Solve for x
    x = 499,285.28/690.21
  6. Step 6: Final answer
    x = 723.38

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Double scale
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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.