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Finding the Fourth Proportional to 700.79, 967.32 and 479.34

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Solution

The fourth proportional to 700.79, 967.32 and 479.34 is: 661.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    700.79 : 967.32 = 479.34 : x
  2. Step 2: Convert to fraction form
    700.79/967.32 = 479.34/x
  3. Step 3: Cross multiply
    700.79x = 967.32 × 479.34
  4. Step 4: Simplify right side
    700.79x = 463,675.17
  5. Step 5: Solve for x
    x = 463,675.17/700.79
  6. Step 6: Final answer
    x = 661.65

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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.