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Finding the Fourth Proportional to 58.15, 79.80 and 57.95

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Solution

The fourth proportional to 58.15, 79.80 and 57.95 is: 79.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.15 : 79.80 = 57.95 : x
  2. Step 2: Convert to fraction form
    58.15/79.80 = 57.95/x
  3. Step 3: Cross multiply
    58.15x = 79.80 × 57.95
  4. Step 4: Simplify right side
    58.15x = 4,623.72
  5. Step 5: Solve for x
    x = 4,623.72/58.15
  6. Step 6: Final answer
    x = 79.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.