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Finding the Fourth Proportional to 630.36, 870 and 364.81

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Solution

The fourth proportional to 630.36, 870 and 364.81 is: 503.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.36 : 870 = 364.81 : x
  2. Step 2: Convert to fraction form
    630.36/870 = 364.81/x
  3. Step 3: Cross multiply
    630.36x = 870 × 364.81
  4. Step 4: Simplify right side
    630.36x = 317,384.70
  5. Step 5: Solve for x
    x = 317,384.70/630.36
  6. Step 6: Final answer
    x = 503.50

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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.