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Finding the Fourth Proportional to 410.99, 616.71 and 228.36

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Solution

The fourth proportional to 410.99, 616.71 and 228.36 is: 342.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.99 : 616.71 = 228.36 : x
  2. Step 2: Convert to fraction form
    410.99/616.71 = 228.36/x
  3. Step 3: Cross multiply
    410.99x = 616.71 × 228.36
  4. Step 4: Simplify right side
    410.99x = 140,831.90
  5. Step 5: Solve for x
    x = 140,831.90/410.99
  6. Step 6: Final answer
    x = 342.67

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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.