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Finding the Fourth Proportional to 707.28, 976 and 412.50

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Solution

The fourth proportional to 707.28, 976 and 412.50 is: 569.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.28 : 976 = 412.50 : x
  2. Step 2: Convert to fraction form
    707.28/976 = 412.50/x
  3. Step 3: Cross multiply
    707.28x = 976 × 412.50
  4. Step 4: Simplify right side
    707.28x = 402,600
  5. Step 5: Solve for x
    x = 402,600/707.28
  6. Step 6: Final answer
    x = 569.22

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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.