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Finding the Fourth Proportional to 1,029.53, 1,419.98 and 670.70

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Solution

The fourth proportional to 1,029.53, 1,419.98 and 670.70 is: 925.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.53 : 1,419.98 = 670.70 : x
  2. Step 2: Convert to fraction form
    1,029.53/1,419.98 = 670.70/x
  3. Step 3: Cross multiply
    1,029.53x = 1,419.98 × 670.70
  4. Step 4: Simplify right side
    1,029.53x = 952,370.13
  5. Step 5: Solve for x
    x = 952,370.13/1,029.53
  6. Step 6: Final answer
    x = 925.06

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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.