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Finding the Fourth Proportional to 1,006.93, 1,390.04 and 675.23

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Solution

The fourth proportional to 1,006.93, 1,390.04 and 675.23 is: 932.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,006.93 : 1,390.04 = 675.23 : x
  2. Step 2: Convert to fraction form
    1,006.93/1,390.04 = 675.23/x
  3. Step 3: Cross multiply
    1,006.93x = 1,390.04 × 675.23
  4. Step 4: Simplify right side
    1,006.93x = 938,598.40
  5. Step 5: Solve for x
    x = 938,598.40/1,006.93
  6. Step 6: Final answer
    x = 932.14

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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.