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Finding the Fourth Proportional to 1,061.83, 1,592.70 and 631.72

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Solution

The fourth proportional to 1,061.83, 1,592.70 and 631.72 is: 947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,061.83 : 1,592.70 = 631.72 : x
  2. Step 2: Convert to fraction form
    1,061.83/1,592.70 = 631.72/x
  3. Step 3: Cross multiply
    1,061.83x = 1,592.70 × 631.72
  4. Step 4: Simplify right side
    1,061.83x = 1,006,140.44
  5. Step 5: Solve for x
    x = 1,006,140.44/1,061.83
  6. Step 6: Final answer
    x = 947.55

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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.