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Finding the Fourth Proportional to 520.28, 779.16 and 460.28

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Solution

The fourth proportional to 520.28, 779.16 and 460.28 is: 689.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.28 : 779.16 = 460.28 : x
  2. Step 2: Convert to fraction form
    520.28/779.16 = 460.28/x
  3. Step 3: Cross multiply
    520.28x = 779.16 × 460.28
  4. Step 4: Simplify right side
    520.28x = 358,631.76
  5. Step 5: Solve for x
    x = 358,631.76/520.28
  6. Step 6: Final answer
    x = 689.31

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1.5x scale

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.