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Finding the Fourth Proportional to 1,154.12, 1,592.23 and 656.69

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Solution

The fourth proportional to 1,154.12, 1,592.23 and 656.69 is: 905.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,154.12 : 1,592.23 = 656.69 : x
  2. Step 2: Convert to fraction form
    1,154.12/1,592.23 = 656.69/x
  3. Step 3: Cross multiply
    1,154.12x = 1,592.23 × 656.69
  4. Step 4: Simplify right side
    1,154.12x = 1,045,590.27
  5. Step 5: Solve for x
    x = 1,045,590.27/1,154.12
  6. Step 6: Final answer
    x = 905.97

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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.