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Finding the Fourth Proportional to 944.80, 1,303.80 and 525.13

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Solution

The fourth proportional to 944.80, 1,303.80 and 525.13 is: 724.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    944.80 : 1,303.80 = 525.13 : x
  2. Step 2: Convert to fraction form
    944.80/1,303.80 = 525.13/x
  3. Step 3: Cross multiply
    944.80x = 1,303.80 × 525.13
  4. Step 4: Simplify right side
    944.80x = 684,659.27
  5. Step 5: Solve for x
    x = 684,659.27/944.80
  6. Step 6: Final answer
    x = 724.66

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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.