Home / 1,005.17-1,387.14-606.85

Finding the Fourth Proportional to 1,005.17, 1,387.14 and 606.85

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Solution

The fourth proportional to 1,005.17, 1,387.14 and 606.85 is: 837.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005.17 : 1,387.14 = 606.85 : x
  2. Step 2: Convert to fraction form
    1,005.17/1,387.14 = 606.85/x
  3. Step 3: Cross multiply
    1,005.17x = 1,387.14 × 606.85
  4. Step 4: Simplify right side
    1,005.17x = 841,775.94
  5. Step 5: Solve for x
    x = 841,775.94/1,005.17
  6. Step 6: Final answer
    x = 837.45

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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.