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Finding the Fourth Proportional to 551.16, 760.57 and 302.49

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Solution

The fourth proportional to 551.16, 760.57 and 302.49 is: 417.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.16 : 760.57 = 302.49 : x
  2. Step 2: Convert to fraction form
    551.16/760.57 = 302.49/x
  3. Step 3: Cross multiply
    551.16x = 760.57 × 302.49
  4. Step 4: Simplify right side
    551.16x = 230,064.82
  5. Step 5: Solve for x
    x = 230,064.82/551.16
  6. Step 6: Final answer
    x = 417.42

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Why These Related Problems?

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