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Finding the Fourth Proportional to 349.00, 520.64 and 291.59

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Solution

The fourth proportional to 349.00, 520.64 and 291.59 is: 435.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    349.00 : 520.64 = 291.59 : x
  2. Step 2: Convert to fraction form
    349.00/520.64 = 291.59/x
  3. Step 3: Cross multiply
    349.00x = 520.64 × 291.59
  4. Step 4: Simplify right side
    349.00x = 151,812.40
  5. Step 5: Solve for x
    x = 151,812.40/349.00
  6. Step 6: Final answer
    x = 435.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.