Home / 1,459.28-2,188.32-471.79

Finding the Fourth Proportional to 1,459.28, 2,188.32 and 471.79

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Solution

The fourth proportional to 1,459.28, 2,188.32 and 471.79 is: 707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.28 : 2,188.32 = 471.79 : x
  2. Step 2: Convert to fraction form
    1,459.28/2,188.32 = 471.79/x
  3. Step 3: Cross multiply
    1,459.28x = 2,188.32 × 471.79
  4. Step 4: Simplify right side
    1,459.28x = 1,032,428.46
  5. Step 5: Solve for x
    x = 1,032,428.46/1,459.28
  6. Step 6: Final answer
    x = 707.49

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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.