Home / 1,045.19-1,567.28-314.57

Finding the Fourth Proportional to 1,045.19, 1,567.28 and 314.57

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Solution

The fourth proportional to 1,045.19, 1,567.28 and 314.57 is: 471.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045.19 : 1,567.28 = 314.57 : x
  2. Step 2: Convert to fraction form
    1,045.19/1,567.28 = 314.57/x
  3. Step 3: Cross multiply
    1,045.19x = 1,567.28 × 314.57
  4. Step 4: Simplify right side
    1,045.19x = 493,009.86
  5. Step 5: Solve for x
    x = 493,009.86/1,045.19
  6. Step 6: Final answer
    x = 471.70

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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.