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Finding the Fourth Proportional to 530.50, 795.70 and 165.19

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Solution

The fourth proportional to 530.50, 795.70 and 165.19 is: 247.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.50 : 795.70 = 165.19 : x
  2. Step 2: Convert to fraction form
    530.50/795.70 = 165.19/x
  3. Step 3: Cross multiply
    530.50x = 795.70 × 165.19
  4. Step 4: Simplify right side
    530.50x = 131,440.93
  5. Step 5: Solve for x
    x = 131,440.93/530.50
  6. Step 6: Final answer
    x = 247.77

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Double scale
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Similar ratio
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1.5x scale

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.