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Finding the Fourth Proportional to 1,341.47, 2,011.43 and 560.63

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Solution

The fourth proportional to 1,341.47, 2,011.43 and 560.63 is: 840.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.47 : 2,011.43 = 560.63 : x
  2. Step 2: Convert to fraction form
    1,341.47/2,011.43 = 560.63/x
  3. Step 3: Cross multiply
    1,341.47x = 2,011.43 × 560.63
  4. Step 4: Simplify right side
    1,341.47x = 1,127,655.14
  5. Step 5: Solve for x
    x = 1,127,655.14/1,341.47
  6. Step 6: Final answer
    x = 840.61

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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.