Home / 1,432.30-2,148.65-543.16

Finding the Fourth Proportional to 1,432.30, 2,148.65 and 543.16

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Solution

The fourth proportional to 1,432.30, 2,148.65 and 543.16 is: 814.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.30 : 2,148.65 = 543.16 : x
  2. Step 2: Convert to fraction form
    1,432.30/2,148.65 = 543.16/x
  3. Step 3: Cross multiply
    1,432.30x = 2,148.65 × 543.16
  4. Step 4: Simplify right side
    1,432.30x = 1,167,051.94
  5. Step 5: Solve for x
    x = 1,167,051.94/1,432.30
  6. Step 6: Final answer
    x = 814.81

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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.