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Finding the Fourth Proportional to 808.04, 1,113.54 and 545.60

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Solution

The fourth proportional to 808.04, 1,113.54 and 545.60 is: 751.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    808.04 : 1,113.54 = 545.60 : x
  2. Step 2: Convert to fraction form
    808.04/1,113.54 = 545.60/x
  3. Step 3: Cross multiply
    808.04x = 1,113.54 × 545.60
  4. Step 4: Simplify right side
    808.04x = 607,547.42
  5. Step 5: Solve for x
    x = 607,547.42/808.04
  6. Step 6: Final answer
    x = 751.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.