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Finding the Fourth Proportional to 554.03, 831.05 and 371.78

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Solution

The fourth proportional to 554.03, 831.05 and 371.78 is: 557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.03 : 831.05 = 371.78 : x
  2. Step 2: Convert to fraction form
    554.03/831.05 = 371.78/x
  3. Step 3: Cross multiply
    554.03x = 831.05 × 371.78
  4. Step 4: Simplify right side
    554.03x = 308,967.77
  5. Step 5: Solve for x
    x = 308,967.77/554.03
  6. Step 6: Final answer
    x = 557.67

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Double scale
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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.