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Finding the Fourth Proportional to 1,913.06, 2,869.53 and 545.06

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Solution

The fourth proportional to 1,913.06, 2,869.53 and 545.06 is: 817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.06 : 2,869.53 = 545.06 : x
  2. Step 2: Convert to fraction form
    1,913.06/2,869.53 = 545.06/x
  3. Step 3: Cross multiply
    1,913.06x = 2,869.53 × 545.06
  4. Step 4: Simplify right side
    1,913.06x = 1,564,066.02
  5. Step 5: Solve for x
    x = 1,564,066.02/1,913.06
  6. Step 6: Final answer
    x = 817.57

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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.