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Finding the Fourth Proportional to 1,154.92, 1,593.85 and 761.66

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Solution

The fourth proportional to 1,154.92, 1,593.85 and 761.66 is: 1,051.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.92 : 1,593.85 = 761.66 : x
  2. Step 2: Convert to fraction form
    1,154.92/1,593.85 = 761.66/x
  3. Step 3: Cross multiply
    1,154.92x = 1,593.85 × 761.66
  4. Step 4: Simplify right side
    1,154.92x = 1,213,971.79
  5. Step 5: Solve for x
    x = 1,213,971.79/1,154.92
  6. Step 6: Final answer
    x = 1,051.13

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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.