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Finding the Fourth Proportional to 659.02, 987.69 and 351.02

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Solution

The fourth proportional to 659.02, 987.69 and 351.02 is: 526.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    659.02 : 987.69 = 351.02 : x
  2. Step 2: Convert to fraction form
    659.02/987.69 = 351.02/x
  3. Step 3: Cross multiply
    659.02x = 987.69 × 351.02
  4. Step 4: Simplify right side
    659.02x = 346,698.94
  5. Step 5: Solve for x
    x = 346,698.94/659.02
  6. Step 6: Final answer
    x = 526.08

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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.