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Finding the Fourth Proportional to 554.50, 831.30 and 230.10

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Solution

The fourth proportional to 554.50, 831.30 and 230.10 is: 344.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.50 : 831.30 = 230.10 : x
  2. Step 2: Convert to fraction form
    554.50/831.30 = 230.10/x
  3. Step 3: Cross multiply
    554.50x = 831.30 × 230.10
  4. Step 4: Simplify right side
    554.50x = 191,278.15
  5. Step 5: Solve for x
    x = 191,278.15/554.50
  6. Step 6: Final answer
    x = 344.96

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1.5x scale

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.