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Finding the Fourth Proportional to 617.46, 847.50 and 554.58

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Solution

The fourth proportional to 617.46, 847.50 and 554.58 is: 761.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.46 : 847.50 = 554.58 : x
  2. Step 2: Convert to fraction form
    617.46/847.50 = 554.58/x
  3. Step 3: Cross multiply
    617.46x = 847.50 × 554.58
  4. Step 4: Simplify right side
    617.46x = 470,006.55
  5. Step 5: Solve for x
    x = 470,006.55/617.46
  6. Step 6: Final answer
    x = 761.19

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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.