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Finding the Fourth Proportional to 60.59, 90.72 and 47.00

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Solution

The fourth proportional to 60.59, 90.72 and 47.00 is: 70.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    60.59 : 90.72 = 47.00 : x
  2. Step 2: Convert to fraction form
    60.59/90.72 = 47.00/x
  3. Step 3: Cross multiply
    60.59x = 90.72 × 47.00
  4. Step 4: Simplify right side
    60.59x = 4,263.39
  5. Step 5: Solve for x
    x = 4,263.39/60.59
  6. Step 6: Final answer
    x = 70.37

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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.