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Finding the Fourth Proportional to 1,077.88, 1,618.06 and 501.88

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Solution

The fourth proportional to 1,077.88, 1,618.06 and 501.88 is: 753.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,077.88 : 1,618.06 = 501.88 : x
  2. Step 2: Convert to fraction form
    1,077.88/1,618.06 = 501.88/x
  3. Step 3: Cross multiply
    1,077.88x = 1,618.06 × 501.88
  4. Step 4: Simplify right side
    1,077.88x = 812,071.95
  5. Step 5: Solve for x
    x = 812,071.95/1,077.88
  6. Step 6: Final answer
    x = 753.40

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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.