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Finding the Fourth Proportional to 554.76, 831.32 and 348.68

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Solution

The fourth proportional to 554.76, 831.32 and 348.68 is: 522.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.76 : 831.32 = 348.68 : x
  2. Step 2: Convert to fraction form
    554.76/831.32 = 348.68/x
  3. Step 3: Cross multiply
    554.76x = 831.32 × 348.68
  4. Step 4: Simplify right side
    554.76x = 289,864.66
  5. Step 5: Solve for x
    x = 289,864.66/554.76
  6. Step 6: Final answer
    x = 522.50

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Double scale
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Similar ratio
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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.