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Finding the Fourth Proportional to 530.34, 795.43 and 256.35

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Solution

The fourth proportional to 530.34, 795.43 and 256.35 is: 384.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.34 : 795.43 = 256.35 : x
  2. Step 2: Convert to fraction form
    530.34/795.43 = 256.35/x
  3. Step 3: Cross multiply
    530.34x = 795.43 × 256.35
  4. Step 4: Simplify right side
    530.34x = 203,908.48
  5. Step 5: Solve for x
    x = 203,908.48/530.34
  6. Step 6: Final answer
    x = 384.49

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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.