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Finding the Fourth Proportional to 556.16, 767.54 and 323.29

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Solution

The fourth proportional to 556.16, 767.54 and 323.29 is: 446.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.16 : 767.54 = 323.29 : x
  2. Step 2: Convert to fraction form
    556.16/767.54 = 323.29/x
  3. Step 3: Cross multiply
    556.16x = 767.54 × 323.29
  4. Step 4: Simplify right side
    556.16x = 248,136.90
  5. Step 5: Solve for x
    x = 248,136.90/556.16
  6. Step 6: Final answer
    x = 446.16

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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.