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Finding the Fourth Proportional to 177.68, 265.91 and 147.30

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Solution

The fourth proportional to 177.68, 265.91 and 147.30 is: 220.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    177.68 : 265.91 = 147.30 : x
  2. Step 2: Convert to fraction form
    177.68/265.91 = 147.30/x
  3. Step 3: Cross multiply
    177.68x = 265.91 × 147.30
  4. Step 4: Simplify right side
    177.68x = 39,167.81
  5. Step 5: Solve for x
    x = 39,167.81/177.68
  6. Step 6: Final answer
    x = 220.45

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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.