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Finding the Fourth Proportional to 1,585.97, 2,378.93 and 545.96

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Solution

The fourth proportional to 1,585.97, 2,378.93 and 545.96 is: 818.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,585.97 : 2,378.93 = 545.96 : x
  2. Step 2: Convert to fraction form
    1,585.97/2,378.93 = 545.96/x
  3. Step 3: Cross multiply
    1,585.97x = 2,378.93 × 545.96
  4. Step 4: Simplify right side
    1,585.97x = 1,298,803.84
  5. Step 5: Solve for x
    x = 1,298,803.84/1,585.97
  6. Step 6: Final answer
    x = 818.93

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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.