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Finding the Fourth Proportional to 719.53, 1,077.47 and 446.16

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Solution

The fourth proportional to 719.53, 1,077.47 and 446.16 is: 668.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    719.53 : 1,077.47 = 446.16 : x
  2. Step 2: Convert to fraction form
    719.53/1,077.47 = 446.16/x
  3. Step 3: Cross multiply
    719.53x = 1,077.47 × 446.16
  4. Step 4: Simplify right side
    719.53x = 480,719.74
  5. Step 5: Solve for x
    x = 480,719.74/719.53
  6. Step 6: Final answer
    x = 668.10

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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.