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Finding the Fourth Proportional to 554.41, 831.07 and 310.40

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Solution

The fourth proportional to 554.41, 831.07 and 310.40 is: 465.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.41 : 831.07 = 310.40 : x
  2. Step 2: Convert to fraction form
    554.41/831.07 = 310.40/x
  3. Step 3: Cross multiply
    554.41x = 831.07 × 310.40
  4. Step 4: Simplify right side
    554.41x = 257,964.13
  5. Step 5: Solve for x
    x = 257,964.13/554.41
  6. Step 6: Final answer
    x = 465.29

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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.