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Finding the Fourth Proportional to 1,041.10, 1,569.91 and 927.70

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Solution

The fourth proportional to 1,041.10, 1,569.91 and 927.70 is: 1,398.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,041.10 : 1,569.91 = 927.70 : x
  2. Step 2: Convert to fraction form
    1,041.10/1,569.91 = 927.70/x
  3. Step 3: Cross multiply
    1,041.10x = 1,569.91 × 927.70
  4. Step 4: Simplify right side
    1,041.10x = 1,456,405.51
  5. Step 5: Solve for x
    x = 1,456,405.51/1,041.10
  6. Step 6: Final answer
    x = 1,398.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.