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Finding the Fourth Proportional to 1,539.55, 2,307.96 and 716.69

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Solution

The fourth proportional to 1,539.55, 2,307.96 and 716.69 is: 1,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.55 : 2,307.96 = 716.69 : x
  2. Step 2: Convert to fraction form
    1,539.55/2,307.96 = 716.69/x
  3. Step 3: Cross multiply
    1,539.55x = 2,307.96 × 716.69
  4. Step 4: Simplify right side
    1,539.55x = 1,654,088.11
  5. Step 5: Solve for x
    x = 1,654,088.11/1,539.55
  6. Step 6: Final answer
    x = 1,074.40

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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.