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Finding the Fourth Proportional to 750.80, 1,036.18 and 471.25

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Solution

The fourth proportional to 750.80, 1,036.18 and 471.25 is: 650.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.80 : 1,036.18 = 471.25 : x
  2. Step 2: Convert to fraction form
    750.80/1,036.18 = 471.25/x
  3. Step 3: Cross multiply
    750.80x = 1,036.18 × 471.25
  4. Step 4: Simplify right side
    750.80x = 488,299.83
  5. Step 5: Solve for x
    x = 488,299.83/750.80
  6. Step 6: Final answer
    x = 650.37

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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.