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Finding the Fourth Proportional to 620.10, 929.61 and 360.09

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Solution

The fourth proportional to 620.10, 929.61 and 360.09 is: 539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    620.10 : 929.61 = 360.09 : x
  2. Step 2: Convert to fraction form
    620.10/929.61 = 360.09/x
  3. Step 3: Cross multiply
    620.10x = 929.61 × 360.09
  4. Step 4: Simplify right side
    620.10x = 334,743.26
  5. Step 5: Solve for x
    x = 334,743.26/620.10
  6. Step 6: Final answer
    x = 539.82

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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.