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Finding the Fourth Proportional to 802.59, 1,106.51 and 637.35

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Solution

The fourth proportional to 802.59, 1,106.51 and 637.35 is: 878.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.59 : 1,106.51 = 637.35 : x
  2. Step 2: Convert to fraction form
    802.59/1,106.51 = 637.35/x
  3. Step 3: Cross multiply
    802.59x = 1,106.51 × 637.35
  4. Step 4: Simplify right side
    802.59x = 705,230.96
  5. Step 5: Solve for x
    x = 705,230.96/802.59
  6. Step 6: Final answer
    x = 878.69

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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.