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Finding the Fourth Proportional to 660.68, 990.75 and 295.37

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Solution

The fourth proportional to 660.68, 990.75 and 295.37 is: 442.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    660.68 : 990.75 = 295.37 : x
  2. Step 2: Convert to fraction form
    660.68/990.75 = 295.37/x
  3. Step 3: Cross multiply
    660.68x = 990.75 × 295.37
  4. Step 4: Simplify right side
    660.68x = 292,637.83
  5. Step 5: Solve for x
    x = 292,637.83/660.68
  6. Step 6: Final answer
    x = 442.93

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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.