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Finding the Fourth Proportional to 1,543.54, 2,315.37 and 569.11

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Solution

The fourth proportional to 1,543.54, 2,315.37 and 569.11 is: 853.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.54 : 2,315.37 = 569.11 : x
  2. Step 2: Convert to fraction form
    1,543.54/2,315.37 = 569.11/x
  3. Step 3: Cross multiply
    1,543.54x = 2,315.37 × 569.11
  4. Step 4: Simplify right side
    1,543.54x = 1,317,700.22
  5. Step 5: Solve for x
    x = 1,317,700.22/1,543.54
  6. Step 6: Final answer
    x = 853.69

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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.