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Finding the Fourth Proportional to 714.37, 985.31 and 655.54

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Solution

The fourth proportional to 714.37, 985.31 and 655.54 is: 904.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.37 : 985.31 = 655.54 : x
  2. Step 2: Convert to fraction form
    714.37/985.31 = 655.54/x
  3. Step 3: Cross multiply
    714.37x = 985.31 × 655.54
  4. Step 4: Simplify right side
    714.37x = 645,916.06
  5. Step 5: Solve for x
    x = 645,916.06/714.37
  6. Step 6: Final answer
    x = 904.18

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1.5x scale

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.