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Finding the Fourth Proportional to 608.99, 840.53 and 360.36

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Solution

The fourth proportional to 608.99, 840.53 and 360.36 is: 497.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    608.99 : 840.53 = 360.36 : x
  2. Step 2: Convert to fraction form
    608.99/840.53 = 360.36/x
  3. Step 3: Cross multiply
    608.99x = 840.53 × 360.36
  4. Step 4: Simplify right side
    608.99x = 302,894.29
  5. Step 5: Solve for x
    x = 302,894.29/608.99
  6. Step 6: Final answer
    x = 497.38

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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.