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Finding the Fourth Proportional to 1,606.21, 2,409.40 and 510.66

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Solution

The fourth proportional to 1,606.21, 2,409.40 and 510.66 is: 766.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,606.21 : 2,409.40 = 510.66 : x
  2. Step 2: Convert to fraction form
    1,606.21/2,409.40 = 510.66/x
  3. Step 3: Cross multiply
    1,606.21x = 2,409.40 × 510.66
  4. Step 4: Simplify right side
    1,606.21x = 1,230,384.20
  5. Step 5: Solve for x
    x = 1,230,384.20/1,606.21
  6. Step 6: Final answer
    x = 766.02

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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.