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Finding the Fourth Proportional to 470.66, 705.20 and 354.51

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Solution

The fourth proportional to 470.66, 705.20 and 354.51 is: 531.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.66 : 705.20 = 354.51 : x
  2. Step 2: Convert to fraction form
    470.66/705.20 = 354.51/x
  3. Step 3: Cross multiply
    470.66x = 705.20 × 354.51
  4. Step 4: Simplify right side
    470.66x = 249,998.68
  5. Step 5: Solve for x
    x = 249,998.68/470.66
  6. Step 6: Final answer
    x = 531.17

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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.