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Finding the Fourth Proportional to 1,046.07, 1,444.55 and 783.63

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Solution

The fourth proportional to 1,046.07, 1,444.55 and 783.63 is: 1,082.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,046.07 : 1,444.55 = 783.63 : x
  2. Step 2: Convert to fraction form
    1,046.07/1,444.55 = 783.63/x
  3. Step 3: Cross multiply
    1,046.07x = 1,444.55 × 783.63
  4. Step 4: Simplify right side
    1,046.07x = 1,131,988.80
  5. Step 5: Solve for x
    x = 1,131,988.80/1,046.07
  6. Step 6: Final answer
    x = 1,082.13

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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.