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Finding the Fourth Proportional to 708.19, 1,062.09 and 502.15

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Solution

The fourth proportional to 708.19, 1,062.09 and 502.15 is: 753.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    708.19 : 1,062.09 = 502.15 : x
  2. Step 2: Convert to fraction form
    708.19/1,062.09 = 502.15/x
  3. Step 3: Cross multiply
    708.19x = 1,062.09 × 502.15
  4. Step 4: Simplify right side
    708.19x = 533,328.49
  5. Step 5: Solve for x
    x = 533,328.49/708.19
  6. Step 6: Final answer
    x = 753.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.