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Finding the Fourth Proportional to 530.01, 793.80 and 485.06

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Solution

The fourth proportional to 530.01, 793.80 and 485.06 is: 726.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.01 : 793.80 = 485.06 : x
  2. Step 2: Convert to fraction form
    530.01/793.80 = 485.06/x
  3. Step 3: Cross multiply
    530.01x = 793.80 × 485.06
  4. Step 4: Simplify right side
    530.01x = 385,036.66
  5. Step 5: Solve for x
    x = 385,036.66/530.01
  6. Step 6: Final answer
    x = 726.47

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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.