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Finding the Fourth Proportional to 707.35, 975.36 and 579.20

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Solution

The fourth proportional to 707.35, 975.36 and 579.20 is: 798.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    707.35 : 975.36 = 579.20 : x
  2. Step 2: Convert to fraction form
    707.35/975.36 = 579.20/x
  3. Step 3: Cross multiply
    707.35x = 975.36 × 579.20
  4. Step 4: Simplify right side
    707.35x = 564,928.51
  5. Step 5: Solve for x
    x = 564,928.51/707.35
  6. Step 6: Final answer
    x = 798.65

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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.