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Finding the Fourth Proportional to 672.98, 1,010.54 and 384.62

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Solution

The fourth proportional to 672.98, 1,010.54 and 384.62 is: 577.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    672.98 : 1,010.54 = 384.62 : x
  2. Step 2: Convert to fraction form
    672.98/1,010.54 = 384.62/x
  3. Step 3: Cross multiply
    672.98x = 1,010.54 × 384.62
  4. Step 4: Simplify right side
    672.98x = 388,669.80
  5. Step 5: Solve for x
    x = 388,669.80/672.98
  6. Step 6: Final answer
    x = 577.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.