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Finding the Fourth Proportional to 58.90, 88.88 and 58.20

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Solution

The fourth proportional to 58.90, 88.88 and 58.20 is: 87.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.90 : 88.88 = 58.20 : x
  2. Step 2: Convert to fraction form
    58.90/88.88 = 58.20/x
  3. Step 3: Cross multiply
    58.90x = 88.88 × 58.20
  4. Step 4: Simplify right side
    58.90x = 5,172.82
  5. Step 5: Solve for x
    x = 5,172.82/58.90
  6. Step 6: Final answer
    x = 87.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.