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Finding the Fourth Proportional to 530.30, 795.51 and 205.70

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Solution

The fourth proportional to 530.30, 795.51 and 205.70 is: 308.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.30 : 795.51 = 205.70 : x
  2. Step 2: Convert to fraction form
    530.30/795.51 = 205.70/x
  3. Step 3: Cross multiply
    530.30x = 795.51 × 205.70
  4. Step 4: Simplify right side
    530.30x = 163,632.43
  5. Step 5: Solve for x
    x = 163,632.43/530.30
  6. Step 6: Final answer
    x = 308.57

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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.