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Finding the Fourth Proportional to 652.30, 900.20 and 357.55

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Solution

The fourth proportional to 652.30, 900.20 and 357.55 is: 493.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.30 : 900.20 = 357.55 : x
  2. Step 2: Convert to fraction form
    652.30/900.20 = 357.55/x
  3. Step 3: Cross multiply
    652.30x = 900.20 × 357.55
  4. Step 4: Simplify right side
    652.30x = 321,866.51
  5. Step 5: Solve for x
    x = 321,866.51/652.30
  6. Step 6: Final answer
    x = 493.43

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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.