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Finding the Fourth Proportional to 1,173.34, 1,758.32 and 802.80

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Solution

The fourth proportional to 1,173.34, 1,758.32 and 802.80 is: 1,203.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.34 : 1,758.32 = 802.80 : x
  2. Step 2: Convert to fraction form
    1,173.34/1,758.32 = 802.80/x
  3. Step 3: Cross multiply
    1,173.34x = 1,758.32 × 802.80
  4. Step 4: Simplify right side
    1,173.34x = 1,411,579.30
  5. Step 5: Solve for x
    x = 1,411,579.30/1,173.34
  6. Step 6: Final answer
    x = 1,203.04

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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.