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Finding the Fourth Proportional to 530.09, 795.23 and 256.51

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Solution

The fourth proportional to 530.09, 795.23 and 256.51 is: 384.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.09 : 795.23 = 256.51 : x
  2. Step 2: Convert to fraction form
    530.09/795.23 = 256.51/x
  3. Step 3: Cross multiply
    530.09x = 795.23 × 256.51
  4. Step 4: Simplify right side
    530.09x = 203,984.45
  5. Step 5: Solve for x
    x = 203,984.45/530.09
  6. Step 6: Final answer
    x = 384.81

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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.