Home / 1,488.45-2,232.57-392.79

Finding the Fourth Proportional to 1,488.45, 2,232.57 and 392.79

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Solution

The fourth proportional to 1,488.45, 2,232.57 and 392.79 is: 589.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,488.45 : 2,232.57 = 392.79 : x
  2. Step 2: Convert to fraction form
    1,488.45/2,232.57 = 392.79/x
  3. Step 3: Cross multiply
    1,488.45x = 2,232.57 × 392.79
  4. Step 4: Simplify right side
    1,488.45x = 876,931.17
  5. Step 5: Solve for x
    x = 876,931.17/1,488.45
  6. Step 6: Final answer
    x = 589.16

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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.