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Finding the Fourth Proportional to 554.14, 831.12 and 322.30

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Solution

The fourth proportional to 554.14, 831.12 and 322.30 is: 483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.14 : 831.12 = 322.30 : x
  2. Step 2: Convert to fraction form
    554.14/831.12 = 322.30/x
  3. Step 3: Cross multiply
    554.14x = 831.12 × 322.30
  4. Step 4: Simplify right side
    554.14x = 267,869.98
  5. Step 5: Solve for x
    x = 267,869.98/554.14
  6. Step 6: Final answer
    x = 483.40

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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.