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Finding the Fourth Proportional to 114.52, 158.05 and 65.40

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Solution

The fourth proportional to 114.52, 158.05 and 65.40 is: 90.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    114.52 : 158.05 = 65.40 : x
  2. Step 2: Convert to fraction form
    114.52/158.05 = 65.40/x
  3. Step 3: Cross multiply
    114.52x = 158.05 × 65.40
  4. Step 4: Simplify right side
    114.52x = 10,337.14
  5. Step 5: Solve for x
    x = 10,337.14/114.52
  6. Step 6: Final answer
    x = 90.26

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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.