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Finding the Fourth Proportional to 60.47, 90.49 and 49.07

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Solution

The fourth proportional to 60.47, 90.49 and 49.07 is: 73.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.47 : 90.49 = 49.07 : x
  2. Step 2: Convert to fraction form
    60.47/90.49 = 49.07/x
  3. Step 3: Cross multiply
    60.47x = 90.49 × 49.07
  4. Step 4: Simplify right side
    60.47x = 4,440.34
  5. Step 5: Solve for x
    x = 4,440.34/60.47
  6. Step 6: Final answer
    x = 73.43

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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.