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Finding the Fourth Proportional to 470.39, 705.08 and 264.90

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Solution

The fourth proportional to 470.39, 705.08 and 264.90 is: 397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.39 : 705.08 = 264.90 : x
  2. Step 2: Convert to fraction form
    470.39/705.08 = 264.90/x
  3. Step 3: Cross multiply
    470.39x = 705.08 × 264.90
  4. Step 4: Simplify right side
    470.39x = 186,774.37
  5. Step 5: Solve for x
    x = 186,774.37/470.39
  6. Step 6: Final answer
    x = 397.07

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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.