Home / 1,045.92-1,569.09-315.66

Finding the Fourth Proportional to 1,045.92, 1,569.09 and 315.66

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Solution

The fourth proportional to 1,045.92, 1,569.09 and 315.66 is: 473.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.92 : 1,569.09 = 315.66 : x
  2. Step 2: Convert to fraction form
    1,045.92/1,569.09 = 315.66/x
  3. Step 3: Cross multiply
    1,045.92x = 1,569.09 × 315.66
  4. Step 4: Simplify right side
    1,045.92x = 495,298.95
  5. Step 5: Solve for x
    x = 495,298.95/1,045.92
  6. Step 6: Final answer
    x = 473.55

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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.