Home / 1,045.95-1,569.07-315.59

Finding the Fourth Proportional to 1,045.95, 1,569.07 and 315.59

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Solution

The fourth proportional to 1,045.95, 1,569.07 and 315.59 is: 473.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.95 : 1,569.07 = 315.59 : x
  2. Step 2: Convert to fraction form
    1,045.95/1,569.07 = 315.59/x
  3. Step 3: Cross multiply
    1,045.95x = 1,569.07 × 315.59
  4. Step 4: Simplify right side
    1,045.95x = 495,175.35
  5. Step 5: Solve for x
    x = 495,175.35/1,045.95
  6. Step 6: Final answer
    x = 473.42

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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.