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Finding the Fourth Proportional to 802.58, 1,203.86 and 475.79

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Solution

The fourth proportional to 802.58, 1,203.86 and 475.79 is: 713.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.58 : 1,203.86 = 475.79 : x
  2. Step 2: Convert to fraction form
    802.58/1,203.86 = 475.79/x
  3. Step 3: Cross multiply
    802.58x = 1,203.86 × 475.79
  4. Step 4: Simplify right side
    802.58x = 572,784.55
  5. Step 5: Solve for x
    x = 572,784.55/802.58
  6. Step 6: Final answer
    x = 713.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.