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Finding the Fourth Proportional to 1,154.07, 1,592.15 and 656.61

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Solution

The fourth proportional to 1,154.07, 1,592.15 and 656.61 is: 905.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.07 : 1,592.15 = 656.61 : x
  2. Step 2: Convert to fraction form
    1,154.07/1,592.15 = 656.61/x
  3. Step 3: Cross multiply
    1,154.07x = 1,592.15 × 656.61
  4. Step 4: Simplify right side
    1,154.07x = 1,045,427.74
  5. Step 5: Solve for x
    x = 1,045,427.74/1,154.07
  6. Step 6: Final answer
    x = 905.86

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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.