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Finding the Fourth Proportional to 706.79, 975.63 and 412.06

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Solution

The fourth proportional to 706.79, 975.63 and 412.06 is: 568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    706.79 : 975.63 = 412.06 : x
  2. Step 2: Convert to fraction form
    706.79/975.63 = 412.06/x
  3. Step 3: Cross multiply
    706.79x = 975.63 × 412.06
  4. Step 4: Simplify right side
    706.79x = 402,018.10
  5. Step 5: Solve for x
    x = 402,018.10/706.79
  6. Step 6: Final answer
    x = 568.79

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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.