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Finding the Fourth Proportional to 519.24, 717.60 and 380.16

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Solution

The fourth proportional to 519.24, 717.60 and 380.16 is: 525.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    519.24 : 717.60 = 380.16 : x
  2. Step 2: Convert to fraction form
    519.24/717.60 = 380.16/x
  3. Step 3: Cross multiply
    519.24x = 717.60 × 380.16
  4. Step 4: Simplify right side
    519.24x = 272,802.82
  5. Step 5: Solve for x
    x = 272,802.82/519.24
  6. Step 6: Final answer
    x = 525.39

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1.5x scale

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.