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Finding the Fourth Proportional to 897.04, 1,344.04 and 409.20

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Solution

The fourth proportional to 897.04, 1,344.04 and 409.20 is: 613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.04 : 1,344.04 = 409.20 : x
  2. Step 2: Convert to fraction form
    897.04/1,344.04 = 409.20/x
  3. Step 3: Cross multiply
    897.04x = 1,344.04 × 409.20
  4. Step 4: Simplify right side
    897.04x = 549,981.17
  5. Step 5: Solve for x
    x = 549,981.17/897.04
  6. Step 6: Final answer
    x = 613.11

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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.