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Finding the Fourth Proportional to 65, 90.11 and 62.77

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Solution

The fourth proportional to 65, 90.11 and 62.77 is: 87.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    65 : 90.11 = 62.77 : x
  2. Step 2: Convert to fraction form
    65/90.11 = 62.77/x
  3. Step 3: Cross multiply
    65x = 90.11 × 62.77
  4. Step 4: Simplify right side
    65x = 5,656.20
  5. Step 5: Solve for x
    x = 5,656.20/65
  6. Step 6: Final answer
    x = 87.02

Related Problems

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.