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Finding the Fourth Proportional to 1,203.02, 1,804.10 and 509.74

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Solution

The fourth proportional to 1,203.02, 1,804.10 and 509.74 is: 764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.02 : 1,804.10 = 509.74 : x
  2. Step 2: Convert to fraction form
    1,203.02/1,804.10 = 509.74/x
  3. Step 3: Cross multiply
    1,203.02x = 1,804.10 × 509.74
  4. Step 4: Simplify right side
    1,203.02x = 919,617.74
  5. Step 5: Solve for x
    x = 919,617.74/1,203.02
  6. Step 6: Final answer
    x = 764.42

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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.