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Finding the Fourth Proportional to 757.85, 1,045.31 and 544.98

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Solution

The fourth proportional to 757.85, 1,045.31 and 544.98 is: 751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.85 : 1,045.31 = 544.98 : x
  2. Step 2: Convert to fraction form
    757.85/1,045.31 = 544.98/x
  3. Step 3: Cross multiply
    757.85x = 1,045.31 × 544.98
  4. Step 4: Simplify right side
    757.85x = 569,670.32
  5. Step 5: Solve for x
    x = 569,670.32/757.85
  6. Step 6: Final answer
    x = 751.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.