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Finding the Fourth Proportional to 1,770.81, 2,656.23 and 616.56

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Solution

The fourth proportional to 1,770.81, 2,656.23 and 616.56 is: 924.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.81 : 2,656.23 = 616.56 : x
  2. Step 2: Convert to fraction form
    1,770.81/2,656.23 = 616.56/x
  3. Step 3: Cross multiply
    1,770.81x = 2,656.23 × 616.56
  4. Step 4: Simplify right side
    1,770.81x = 1,637,725.17
  5. Step 5: Solve for x
    x = 1,637,725.17/1,770.81
  6. Step 6: Final answer
    x = 924.85

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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.