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Finding the Fourth Proportional to 758.43, 1,045.80 and 548.19

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Solution

The fourth proportional to 758.43, 1,045.80 and 548.19 is: 755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    758.43 : 1,045.80 = 548.19 : x
  2. Step 2: Convert to fraction form
    758.43/1,045.80 = 548.19/x
  3. Step 3: Cross multiply
    758.43x = 1,045.80 × 548.19
  4. Step 4: Simplify right side
    758.43x = 573,297.10
  5. Step 5: Solve for x
    x = 573,297.10/758.43
  6. Step 6: Final answer
    x = 755.90

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Double scale
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1.5x scale

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.