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Finding the Fourth Proportional to 1,068.87, 1,602.80 and 410.87

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Solution

The fourth proportional to 1,068.87, 1,602.80 and 410.87 is: 616.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,068.87 : 1,602.80 = 410.87 : x
  2. Step 2: Convert to fraction form
    1,068.87/1,602.80 = 410.87/x
  3. Step 3: Cross multiply
    1,068.87x = 1,602.80 × 410.87
  4. Step 4: Simplify right side
    1,068.87x = 658,534.42
  5. Step 5: Solve for x
    x = 658,534.42/1,068.87
  6. Step 6: Final answer
    x = 616.11

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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.