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Finding the Fourth Proportional to 508.93, 758.14 and 485.44

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Solution

The fourth proportional to 508.93, 758.14 and 485.44 is: 723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    508.93 : 758.14 = 485.44 : x
  2. Step 2: Convert to fraction form
    508.93/758.14 = 485.44/x
  3. Step 3: Cross multiply
    508.93x = 758.14 × 485.44
  4. Step 4: Simplify right side
    508.93x = 368,031.48
  5. Step 5: Solve for x
    x = 368,031.48/508.93
  6. Step 6: Final answer
    x = 723.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.