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Finding the Fourth Proportional to 1,726.91, 2,590.36 and 632.50

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Solution

The fourth proportional to 1,726.91, 2,590.36 and 632.50 is: 948.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,726.91 : 2,590.36 = 632.50 : x
  2. Step 2: Convert to fraction form
    1,726.91/2,590.36 = 632.50/x
  3. Step 3: Cross multiply
    1,726.91x = 2,590.36 × 632.50
  4. Step 4: Simplify right side
    1,726.91x = 1,638,402.70
  5. Step 5: Solve for x
    x = 1,638,402.70/1,726.91
  6. Step 6: Final answer
    x = 948.75

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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.