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Finding the Fourth Proportional to 58.07, 87.20 and 50.51

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Solution

The fourth proportional to 58.07, 87.20 and 50.51 is: 75.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.07 : 87.20 = 50.51 : x
  2. Step 2: Convert to fraction form
    58.07/87.20 = 50.51/x
  3. Step 3: Cross multiply
    58.07x = 87.20 × 50.51
  4. Step 4: Simplify right side
    58.07x = 4,404.47
  5. Step 5: Solve for x
    x = 4,404.47/58.07
  6. Step 6: Final answer
    x = 75.85

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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.