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Finding the Fourth Proportional to 530.38, 795.75 and 256.51

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Solution

The fourth proportional to 530.38, 795.75 and 256.51 is: 384.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.38 : 795.75 = 256.51 : x
  2. Step 2: Convert to fraction form
    530.38/795.75 = 256.51/x
  3. Step 3: Cross multiply
    530.38x = 795.75 × 256.51
  4. Step 4: Simplify right side
    530.38x = 204,112.57
  5. Step 5: Solve for x
    x = 204,112.57/530.38
  6. Step 6: Final answer
    x = 384.84

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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.