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Finding the Fourth Proportional to 1,048.43, 1,445.12 and 837.93

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Solution

The fourth proportional to 1,048.43, 1,445.12 and 837.93 is: 1,154.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,048.43 : 1,445.12 = 837.93 : x
  2. Step 2: Convert to fraction form
    1,048.43/1,445.12 = 837.93/x
  3. Step 3: Cross multiply
    1,048.43x = 1,445.12 × 837.93
  4. Step 4: Simplify right side
    1,048.43x = 1,210,909.40
  5. Step 5: Solve for x
    x = 1,210,909.40/1,048.43
  6. Step 6: Final answer
    x = 1,154.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.