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Finding the Fourth Proportional to 317.79, 470.01 and 317.79

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Solution

The fourth proportional to 317.79, 470.01 and 317.79 is: 470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.79 : 470.01 = 317.79 : x
  2. Step 2: Convert to fraction form
    317.79/470.01 = 317.79/x
  3. Step 3: Cross multiply
    317.79x = 470.01 × 317.79
  4. Step 4: Simplify right side
    317.79x = 149,364.48
  5. Step 5: Solve for x
    x = 149,364.48/317.79
  6. Step 6: Final answer
    x = 470.01

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.