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Finding the Fourth Proportional to 58.81, 87.66 and 58.72

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Solution

The fourth proportional to 58.81, 87.66 and 58.72 is: 87.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.81 : 87.66 = 58.72 : x
  2. Step 2: Convert to fraction form
    58.81/87.66 = 58.72/x
  3. Step 3: Cross multiply
    58.81x = 87.66 × 58.72
  4. Step 4: Simplify right side
    58.81x = 5,147.40
  5. Step 5: Solve for x
    x = 5,147.40/58.81
  6. Step 6: Final answer
    x = 87.53

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.