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Finding the Fourth Proportional to 714.41, 985.58 and 419.17

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Solution

The fourth proportional to 714.41, 985.58 and 419.17 is: 578.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.41 : 985.58 = 419.17 : x
  2. Step 2: Convert to fraction form
    714.41/985.58 = 419.17/x
  3. Step 3: Cross multiply
    714.41x = 985.58 × 419.17
  4. Step 4: Simplify right side
    714.41x = 413,118.54
  5. Step 5: Solve for x
    x = 413,118.54/714.41
  6. Step 6: Final answer
    x = 578.27

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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.