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Finding the Fourth Proportional to 1,283.40, 1,924.97 and 417.69

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Solution

The fourth proportional to 1,283.40, 1,924.97 and 417.69 is: 626.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.40 : 1,924.97 = 417.69 : x
  2. Step 2: Convert to fraction form
    1,283.40/1,924.97 = 417.69/x
  3. Step 3: Cross multiply
    1,283.40x = 1,924.97 × 417.69
  4. Step 4: Simplify right side
    1,283.40x = 804,038.63
  5. Step 5: Solve for x
    x = 804,038.63/1,283.40
  6. Step 6: Final answer
    x = 626.49

Related Problems

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Half scale
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Double scale
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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.