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Finding the Fourth Proportional to 551.46, 761.02 and 302.76

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Solution

The fourth proportional to 551.46, 761.02 and 302.76 is: 417.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.46 : 761.02 = 302.76 : x
  2. Step 2: Convert to fraction form
    551.46/761.02 = 302.76/x
  3. Step 3: Cross multiply
    551.46x = 761.02 × 302.76
  4. Step 4: Simplify right side
    551.46x = 230,406.42
  5. Step 5: Solve for x
    x = 230,406.42/551.46
  6. Step 6: Final answer
    x = 417.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.