Home / 1,029.19-1,543.50-288.75

Finding the Fourth Proportional to 1,029.19, 1,543.50 and 288.75

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Solution

The fourth proportional to 1,029.19, 1,543.50 and 288.75 is: 433.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.19 : 1,543.50 = 288.75 : x
  2. Step 2: Convert to fraction form
    1,029.19/1,543.50 = 288.75/x
  3. Step 3: Cross multiply
    1,029.19x = 1,543.50 × 288.75
  4. Step 4: Simplify right side
    1,029.19x = 445,691.71
  5. Step 5: Solve for x
    x = 445,691.71/1,029.19
  6. Step 6: Final answer
    x = 433.05

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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.