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Finding the Fourth Proportional to 59.34, 89.08 and 56.76

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Solution

The fourth proportional to 59.34, 89.08 and 56.76 is: 85.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.34 : 89.08 = 56.76 : x
  2. Step 2: Convert to fraction form
    59.34/89.08 = 56.76/x
  3. Step 3: Cross multiply
    59.34x = 89.08 × 56.76
  4. Step 4: Simplify right side
    59.34x = 5,056.18
  5. Step 5: Solve for x
    x = 5,056.18/59.34
  6. Step 6: Final answer
    x = 85.21

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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.