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Finding the Fourth Proportional to 1,135.41, 1,702.95 and 404.88

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Solution

The fourth proportional to 1,135.41, 1,702.95 and 404.88 is: 607.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.41 : 1,702.95 = 404.88 : x
  2. Step 2: Convert to fraction form
    1,135.41/1,702.95 = 404.88/x
  3. Step 3: Cross multiply
    1,135.41x = 1,702.95 × 404.88
  4. Step 4: Simplify right side
    1,135.41x = 689,490.40
  5. Step 5: Solve for x
    x = 689,490.40/1,135.41
  6. Step 6: Final answer
    x = 607.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.