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Finding the Fourth Proportional to 410.99, 567.19 and 245.19

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Solution

The fourth proportional to 410.99, 567.19 and 245.19 is: 338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.99 : 567.19 = 245.19 : x
  2. Step 2: Convert to fraction form
    410.99/567.19 = 245.19/x
  3. Step 3: Cross multiply
    410.99x = 567.19 × 245.19
  4. Step 4: Simplify right side
    410.99x = 139,071.75
  5. Step 5: Solve for x
    x = 139,071.75/410.99
  6. Step 6: Final answer
    x = 338.39

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Double scale
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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.