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Finding the Fourth Proportional to 476.84, 715.93 and 245.90

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Solution

The fourth proportional to 476.84, 715.93 and 245.90 is: 369.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    476.84 : 715.93 = 245.90 : x
  2. Step 2: Convert to fraction form
    476.84/715.93 = 245.90/x
  3. Step 3: Cross multiply
    476.84x = 715.93 × 245.90
  4. Step 4: Simplify right side
    476.84x = 176,048.36
  5. Step 5: Solve for x
    x = 176,048.36/476.84
  6. Step 6: Final answer
    x = 369.20

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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.