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Finding the Fourth Proportional to 468.90, 647.05 and 259.07

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Solution

The fourth proportional to 468.90, 647.05 and 259.07 is: 357.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    468.90 : 647.05 = 259.07 : x
  2. Step 2: Convert to fraction form
    468.90/647.05 = 259.07/x
  3. Step 3: Cross multiply
    468.90x = 647.05 × 259.07
  4. Step 4: Simplify right side
    468.90x = 167,632.58
  5. Step 5: Solve for x
    x = 167,632.58/468.90
  6. Step 6: Final answer
    x = 357.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.