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Finding the Fourth Proportional to 802.02, 1,201.40 and 559.02

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Solution

The fourth proportional to 802.02, 1,201.40 and 559.02 is: 837.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    802.02 : 1,201.40 = 559.02 : x
  2. Step 2: Convert to fraction form
    802.02/1,201.40 = 559.02/x
  3. Step 3: Cross multiply
    802.02x = 1,201.40 × 559.02
  4. Step 4: Simplify right side
    802.02x = 671,606.63
  5. Step 5: Solve for x
    x = 671,606.63/802.02
  6. Step 6: Final answer
    x = 837.39

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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.