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Finding the Fourth Proportional to 384.19, 530.19 and 236.89

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Solution

The fourth proportional to 384.19, 530.19 and 236.89 is: 326.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.19 : 530.19 = 236.89 : x
  2. Step 2: Convert to fraction form
    384.19/530.19 = 236.89/x
  3. Step 3: Cross multiply
    384.19x = 530.19 × 236.89
  4. Step 4: Simplify right side
    384.19x = 125,596.71
  5. Step 5: Solve for x
    x = 125,596.71/384.19
  6. Step 6: Final answer
    x = 326.91

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.