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Finding the Fourth Proportional to 837.24, 1,155.38 and 464.24

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Solution

The fourth proportional to 837.24, 1,155.38 and 464.24 is: 640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    837.24 : 1,155.38 = 464.24 : x
  2. Step 2: Convert to fraction form
    837.24/1,155.38 = 464.24/x
  3. Step 3: Cross multiply
    837.24x = 1,155.38 × 464.24
  4. Step 4: Simplify right side
    837.24x = 536,368.99
  5. Step 5: Solve for x
    x = 536,368.99/837.24
  6. Step 6: Final answer
    x = 640.64

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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.