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Finding the Fourth Proportional to 972.51, 1,456.43 and 606.84

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Solution

The fourth proportional to 972.51, 1,456.43 and 606.84 is: 908.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    972.51 : 1,456.43 = 606.84 : x
  2. Step 2: Convert to fraction form
    972.51/1,456.43 = 606.84/x
  3. Step 3: Cross multiply
    972.51x = 1,456.43 × 606.84
  4. Step 4: Simplify right side
    972.51x = 883,816.95
  5. Step 5: Solve for x
    x = 883,816.95/972.51
  6. Step 6: Final answer
    x = 908.80

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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.