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Finding the Fourth Proportional to 58.16, 86.82 and 53.93

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Solution

The fourth proportional to 58.16, 86.82 and 53.93 is: 80.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.16 : 86.82 = 53.93 : x
  2. Step 2: Convert to fraction form
    58.16/86.82 = 53.93/x
  3. Step 3: Cross multiply
    58.16x = 86.82 × 53.93
  4. Step 4: Simplify right side
    58.16x = 4,681.77
  5. Step 5: Solve for x
    x = 4,681.77/58.16
  6. Step 6: Final answer
    x = 80.51

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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.