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Finding the Fourth Proportional to 903.02, 1,354.55 and 415.94

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Solution

The fourth proportional to 903.02, 1,354.55 and 415.94 is: 623.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    903.02 : 1,354.55 = 415.94 : x
  2. Step 2: Convert to fraction form
    903.02/1,354.55 = 415.94/x
  3. Step 3: Cross multiply
    903.02x = 1,354.55 × 415.94
  4. Step 4: Simplify right side
    903.02x = 563,411.53
  5. Step 5: Solve for x
    x = 563,411.53/903.02
  6. Step 6: Final answer
    x = 623.92

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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.