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Finding the Fourth Proportional to 476.19, 714.95 and 245.25

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Solution

The fourth proportional to 476.19, 714.95 and 245.25 is: 368.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.19 : 714.95 = 245.25 : x
  2. Step 2: Convert to fraction form
    476.19/714.95 = 245.25/x
  3. Step 3: Cross multiply
    476.19x = 714.95 × 245.25
  4. Step 4: Simplify right side
    476.19x = 175,340.26
  5. Step 5: Solve for x
    x = 175,340.26/476.19
  6. Step 6: Final answer
    x = 368.21

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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.